1 files changed, 88 insertions, 0 deletions
diff --git a/core/src/fxge/dib/dib_int.h b/core/src/fxge/dib/dib_int.h
new file mode 100644
index 0000000000..a9d0b027c5
--- /dev/null
+++ b/core/src/fxge/dib/dib_int.h
@@ -0,0 +1,88 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+ 
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+class CPDF_FixedMatrix : public CFX_Object
+{
+public:
+    CPDF_FixedMatrix(const CFX_AffineMatrix& src, int bits)
+    {
+        base = 1 << bits;
+        a = FXSYS_round(src.a * base);
+        b = FXSYS_round(src.b * base);
+        c = FXSYS_round(src.c * base);
+        d = FXSYS_round(src.d * base);
+        e = FXSYS_round(src.e * base);
+        f = FXSYS_round(src.f * base);
+    }
+    inline void	Transform(int x, int y, int& x1, int& y1)
+    {
+        x1 = (a * x + c * y + e + base / 2) / base;
+        y1 = (b * x + d * y + f + base / 2) / base;
+    }
+    int		a, b, c, d, e, f;
+    int		base;
+};
+#define FPDF_HUGE_IMAGE_SIZE	60000000
+struct PixelWeight {
+    int		m_SrcStart;
+    int		m_SrcEnd;
+    int		m_Weights[1];
+};
+class CWeightTable : public CFX_Object
+{
+public:
+    CWeightTable()
+    {
+        m_pWeightTables = NULL;
+    }
+    ~CWeightTable()
+    {
+        if(m_pWeightTables) {
+            FX_Free(m_pWeightTables);
+        }
+        m_pWeightTables = NULL;
+    }
+    void			Calc(int dest_len, int dest_min, int dest_max, int src_len, int src_min, int src_max, int flags);
+    PixelWeight*	GetPixelWeight(int pixel)
+    {
+        return (PixelWeight*)(m_pWeightTables + (pixel - m_DestMin) * m_ItemSize);
+    }
+    int				m_DestMin, m_ItemSize;
+    FX_LPBYTE		m_pWeightTables;
+};
+class CStretchEngine : public CFX_Object
+{
+public:
+    CStretchEngine(IFX_ScanlineComposer* pDestBitmap, FXDIB_Format dest_format,
+                   int dest_width, int dest_height, const FX_RECT& clip_rect,
+                   const CFX_DIBSource* pSrcBitmap, int flags);
+    ~CStretchEngine();
+    FX_BOOL		Continue(IFX_Pause* pPause);
+public:
+    FXDIB_Format m_DestFormat;
+    int		m_DestBpp, m_SrcBpp, m_bHasAlpha;
+    IFX_ScanlineComposer*	m_pDestBitmap;
+    int		m_DestWidth, m_DestHeight;
+    FX_RECT	m_DestClip;
+    FX_LPBYTE	m_pDestScanline;
+    FX_LPBYTE   m_pDestMaskScanline;
+    FX_RECT	m_SrcClip;
+    const CFX_DIBSource*	m_pSource;
+    FX_DWORD*	m_pSrcPalette;
+    int		m_SrcWidth, m_SrcHeight;
+    int		m_SrcPitch, m_InterPitch;
+    int m_ExtraMaskPitch;
+    unsigned char*	m_pInterBuf;
+    unsigned char*	m_pExtraAlphaBuf;
+    int		m_TransMethod;
+    int 	m_Flags;
+    CWeightTable	m_WeightTable;
+    int		m_CurRow;
+    FX_BOOL	StartStretchHorz();
+    FX_BOOL	ContinueStretchHorz(IFX_Pause* pPause);
+    void	StretchVert();
+    int		m_State;
+};